201112221 has 8 divisors (see below), whose sum is σ = 276799744. Its totient is φ = 129749760.

The previous prime is 201112217. The next prime is 201112229. The reversal of 201112221 is 122211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201112221 - 2² = 201112217 is a prime.

It is a super-2 number, since 2×201112221² = 80892250871105682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201112197 and 201112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081156 + ... + 1081341.

It is an arithmetic number, because the mean of its divisors is an integer number (34599968).

Almost surely, 2^201112221 is an apocalyptic number.

It is an amenable number.

201112221 is a deficient number, since it is larger than the sum of its proper divisors (75687523).

201112221 is a wasteful number, since it uses less digits than its factorization.

201112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162531.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 201112221 is about 14181.4040560165. The cubic root of 201112221 is about 585.8855956312.

Adding to 201112221 its reverse (122211102), we get a palindrome (323323323).

The spelling of 201112221 in words is "two hundred one million, one hundred twelve thousand, two hundred twenty-one".